Vulnerability · Published Jan 15, 2025 · Assigned by mitre
CVE-2025-23013
High 7.3
In plain English
A high-severity security flaw in pam-u2f from Yubico. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user's password.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | pam-u2f | 1.3.2-r0 | ALPINE-CVE-2025-23013 |
| Alpine:v3.21 | pam-u2f | 1.3.2-r0 | ALPINE-CVE-2025-23013 |
| Alpine:v3.22 | pam-u2f | 1.3.1-r0 | ALPINE-CVE-2025-23013 |
| Alpine:v3.23 | pam-u2f | 1.3.1-r0 | ALPINE-CVE-2025-23013 |
| Alpine:v3.24 | pam-u2f | 1.3.1-r0 | ALPINE-CVE-2025-23013 |
| Debian:12 | pam-u2f | 1.1.0-1.1+deb12u1 | DSA-5853-1 |
| Debian:12 | pam-u2f | 1.1.0-1.1+deb12u1 | DEBIAN-CVE-2025-23013 |
| Debian:13 | pam-u2f | 1.3.1-1 | DEBIAN-CVE-2025-23013 |
| Debian:14 | pam-u2f | 1.3.1-1 | DEBIAN-CVE-2025-23013 |
| Ubuntu:22.04:LTS | pam-u2f | 1.1.0-1.1+deb12u1build0.22.04.1 | USN-7806-1 |
| Ubuntu:22.04:LTS | pam-u2f | 1.1.0-1.1+deb12u1build0.22.04.1 | UBUNTU-CVE-2025-23013 |
| Ubuntu:24.04:LTS | pam-u2f | 1.1.0-1.1+deb12u1build0.24.04.1 | UBUNTU-CVE-2025-23013 |
| Ubuntu:24.04:LTS | pam-u2f | 1.1.0-1.1+deb12u1build0.24.04.1 | USN-7806-1 |
Affected products (as reported)
Weakness: CWE-394 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://www.yubico.com/support/security-advisories/ysa-2025-01/
- http://www.openwall.com/lists/oss-security/2025/01/15/1
- http://www.openwall.com/lists/oss-security/2025/01/16/2
- http://www.openwall.com/lists/oss-security/2025/01/16/3
- http://www.openwall.com/lists/oss-security/2025/01/16/4
- http://www.openwall.com/lists/oss-security/2025/01/16/5
- https://lists.debian.org/debian-lts-announce/2025/02/msg00001.html